c respiration in bacteria occurs on the cytoplasmic membrane (no mito), so how does this work for gram-negative bacteria that do not have a periplasm?…

Anaerobic respiration in bacteria occurs on the cytoplasmic membrane (no mito), so how does this work for gram-negative bacteria that do not have a periplasm? Do H+ ions just sit between the peptidoglycan layer and the membrane?

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